Corrosion of organosilane coated Mg4Y alloy in sodium chloride solution evaluated by impedance spectroscopy and pH changes

被引：14

作者：

Doepke, Amos ^{[1
]}

Xue, Dingchuan ^{[2
]}

Yun, Yeoheung ^{[3
]}

Vanooij, William J. ^{[4
]}

Halsall, H. Brian ^{[1
]}

Heineman, William R. ^{[1
]}

机构：

[1] Univ Cincinnati, Dept Chem, Cincinnati, OH 45221 USA

[2] Univ Cincinnati, Coll Engn, Cincinnati, OH 45221 USA

[3] N Carolina Agr & Tech State Univ, Greensboro, NC 27411 USA

[4] Ecosil Technol LLC, Fairfield, OH 45014 USA

来源：

ELECTROCHIMICA ACTA | 2012年 / 70卷

基金：

美国国家科学基金会;

关键词：

Corrosion; EIS; Magnesium; MAGNESIUM ALLOYS; PURE MAGNESIUM; BEHAVIOR; MEDIA; FILMS; WATER; ZE41; AZ91;

D O I：

10.1016/j.electacta.2012.03.040

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Electrochemical impedance spectroscopy (EIS), open circuit potential and pH changes were used to examine the corrosion of magnesium 4% yttrium alloy (Mg4Y) with and without a silane-epoxy-coating (SEC) in a stirred 0.154 M NaCl solution at 37 degrees C. For a good quality SEC we find a relatively low non-Faradaic resistance of 266 Omega cm(2). The quality of the SEC was affected by the curing temperature. In this article we compare the electrochemical measurements taken during corrosion of bare Mg4Y. Mg4Y with a SEC that remained intact, and a SEC that did not protect the Mg from corrosion. (C) 2012 Elsevier Ltd. All rights reserved.

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收藏

页码：165 / 170

页数：6

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